npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

browser-id3-writer

v6.1.0

Published

JavaScript library for writing ID3 tag to MP3 files in browsers and Node.js

Downloads

25,504

Readme

Browser ID3 Writer

npm package

JavaScript library for writing ID3 (v2.3) tag to MP3 files in browsers and Node.js. It can't read the tag so use another lib to do it.

Note: the library removes existing ID3 tag (v2.2, v2.3 and v2.4).

Here is an online demonstration: egoroof.github.io/browser-id3-writer/

Find the changelog in CHANGELOG.md

Table of Contents

Installation

Take latest version here or with npm:

npm install browser-id3-writer --save

JS modules

The library is only deployed in native JS modules, so in browsers you have to use script with type module:

<script type="module">
  import { ID3Writer } from 'https://your-host/browser-id3-writer.mjs';
  // your code here..
</script>

Or bundle the library to your code.

In Nodejs it imports easily:

import { ID3Writer } from 'browser-id3-writer';

Usage

Browser

Get ArrayBuffer of song

In browsers you should first get ArrayBuffer of the song you would like to add ID3 tag.

FileReader

For example you can create file input and use FileReader:

<input type="file" id="file" accept="audio/mpeg" />
<script type="module">
  import { ID3Writer } from 'https://your-host/browser-id3-writer.mjs';

  document.getElementById('file').addEventListener('change', function () {
    if (this.files.length === 0) {
      return;
    }
    const reader = new FileReader();
    reader.onload = function () {
      const arrayBuffer = reader.result;
      // go next
    };
    reader.onerror = function () {
      // handle error
      console.error('Reader error', reader.error);
    };
    reader.readAsArrayBuffer(this.files[0]);
  });
</script>
Fetch

To get arrayBuffer from a remote server you can use Fetch:

const request = await fetch(urlToSongFile);
if (!request.ok) {
  // handle error
  console.error(`Unable to fetch ${urlToSongFile}`);
}
const arrayBuffer = await request.arrayBuffer();
// go next

Add a tag

Create a new ID3Writer instance with arrayBuffer of your song, set frames and add a tag:

// arrayBuffer of song or empty arrayBuffer if you just want only id3 tag without song
const writer = new ID3Writer(arrayBuffer);
writer
  .setFrame('TIT2', 'Home')
  .setFrame('TPE1', ['Eminem', '50 Cent'])
  .setFrame('TALB', 'Friday Night Lights')
  .setFrame('TYER', 2004)
  .setFrame('TRCK', '6/8')
  .setFrame('TCON', ['Soundtrack'])
  .setFrame('TBPM', 128)
  .setFrame('WPAY', 'https://google.com')
  .setFrame('TKEY', 'Fbm')
  .setFrame('APIC', {
    type: 3,
    data: coverArrayBuffer,
    description: 'Super picture',
  });
writer.addTag();

Save file

Now you can save it to file as you want:

const taggedSongBuffer = writer.arrayBuffer;
const blob = writer.getBlob();
const url = writer.getURL();

For example you can save file using FileSaver.js:

saveAs(blob, 'song with tags.mp3');

If you are writing chromium extension you can save file using Downloads API:

chrome.downloads.download({
  url: url,
  filename: 'song with tags.mp3',
});

Memory control

When you generate URLs via writer.getURL() you should know that whole file is kept in memory until you close the page or move to another one. So if you generate lots of URLs in a single page you should manually free memory after you finish downloading file:

URL.revokeObjectURL(url); // if you know url or
writer.revokeURL(); // if you have access to writer

Node.js

Simple example with blocking IO:

import { ID3Writer } from 'browser-id3-writer';
import { readFileSync, writeFileSync } from 'fs';

const songBuffer = readFileSync('path_to_song.mp3');
const coverBuffer = readFileSync('path_to_cover.jpg');

const writer = new ID3Writer(songBuffer);
writer
  .setFrame('TIT2', 'Home')
  .setFrame('TPE1', ['Eminem', '50 Cent'])
  .setFrame('TALB', 'Friday Night Lights')
  .setFrame('TYER', 2004)
  .setFrame('APIC', {
    type: 3,
    data: coverBuffer,
    description: 'Super picture',
  });
writer.addTag();

const taggedSongBuffer = Buffer.from(writer.arrayBuffer);
writeFileSync('song_with_tags.mp3', taggedSongBuffer);

You can also create only ID3 tag without song and use it as you want:

const writer = new ID3Writer(Buffer.alloc(0));
writer.padding = 0; // default 4096
writer.setFrame('TIT2', 'Home');
writer.addTag();
const id3Buffer = Buffer.from(writer.arrayBuffer);

Supported frames

array of strings:

  • TPE1 (song artists)
  • TCOM (song composers)
  • TCON (song genres)

string

  • TLAN (language)
  • TIT1 (content group description)
  • TIT2 (song title)
  • TIT3 (song subtitle)
  • TALB (album title)
  • TPE2 (album artist)
  • TPE3 (conductor/performer refinement)
  • TPE4 (interpreted, remixed, or otherwise modified by)
  • TRCK (song number in album): '5' or '5/10'
  • TPOS (album disc number): '1' or '1/3'
  • TPUB (label name)
  • TKEY (initial key)
  • TMED (media type)
  • TDAT (album release date expressed as 'DDMM')
  • TSRC (isrc - international standard recording code)
  • TCOP (copyright message)
  • TEXT (lyricist / text writer)
  • WCOM (commercial information)
  • WCOP (copyright/Legal information)
  • WOAF (official audio file webpage)
  • WOAR (official artist/performer webpage)
  • WOAS (official audio source webpage)
  • WORS (official internet radio station homepage)
  • WPAY (payment)
  • WPUB (publishers official webpage)

integer

  • TLEN (song duration in milliseconds)
  • TYER (album release year)
  • TBPM (beats per minute)

object

  • COMM (comments):
writer.setFrame('COMM', {
  description: 'description here',
  text: 'text here',
  language: 'eng',
});
  • USLT (unsychronised lyrics):
writer.setFrame('USLT', {
  description: 'description here',
  lyrics: 'lyrics here',
  language: 'eng',
});
  • IPLS (involved people list):
writer.setFrame('IPLS', [
  ['role', 'name'],
  ['role', 'name'],
  // ...
]);
  • SYLT (synchronised lyrics):
writer.setFrame('SYLT', {
  type: 1,
  text: [
    ['lyrics here', 0],
    ['lyrics here', 3500],
    // ...
  ],
  timestampFormat: 2,
  language: 'eng',
  description: 'description',
});

text is an array of arrays of string and integer.

  • TXXX (user defined text):
writer.setFrame('TXXX', {
  description: 'description here',
  value: 'value here',
});
  • PRIV (private frame):
writer.setFrame('PRIV', {
  id: 'identifier',
  data: dataArrayBuffer,
});
  • APIC (attached picture):
writer.setFrame('APIC', {
  type: 3,
  data: coverArrayBuffer,
  description: 'description here',
  useUnicodeEncoding: false,
});

useUnicodeEncoding should only be true when description contains non-Western characters. When it's set to true some program might not be able to read the picture correctly. See #42.

APIC picture types

| Type | Name | | ---- | ----------------------------------- | | 0 | Other | | 1 | 32x32 pixels 'file icon' (PNG only) | | 2 | Other file icon | | 3 | Cover (front) | | 4 | Cover (back) | | 5 | Leaflet page | | 6 | Media (e.g. label side of CD) | | 7 | Lead artist/lead performer/soloist | | 8 | Artist/performer | | 9 | Conductor | | 10 | Band/Orchestra | | 11 | Composer | | 12 | Lyricist/text writer | | 13 | Recording location | | 14 | During recording | | 15 | During performance | | 16 | Movie/video screen capture | | 17 | A bright coloured fish | | 18 | Illustration | | 19 | Band/artist logotype | | 20 | Publisher/Studio logotype |

SYLT content types

| Type | Name | | ---- | -------------------------------------------- | | 0 | Other | | 1 | Lyrics | | 2 | Text transcription | | 3 | Movement/part name (e.g. "Adagio") | | 4 | Events (e.g. "Don Quijote enters the stage") | | 5 | Chord (e.g. "Bb F Fsus") | | 6 | Trivia/'pop up' information |

SYLT timestamp formats

| Type | Name | | ---- | ------------------------------------------------------- | | 1 | Absolute time, 32 bit sized, using MPEG frames as unit | | 2 | Absolute time, 32 bit sized, using milliseconds as unit |